Filter-press device



G. F. MILLER.

FILTER PRESS DEVICE. APPLICATION FILED AFR. I4, I9l9.

1,330,332. Patented Feb. 10, 1920.

5 SHEETS-SHEET l.

G. F. MILLER.

FILTER PRESS DEVICE.

APPLlcAmN FILED APR. 14. 1919.

Mnlruuwmwmwwnuuu u muuuuuluuwwll QSM G. F. MILLER.

FILTER PRESS DEVICE.

APPLICATION FILED APR. I4. m9.

Patented Feb. 10,1920.

5 SHEETS-SHEET 3.

Arm/MEV G. F. MILLER.

FILTER PRESS DEVICE.

APPLICATIoN lman APR. 14. m9.

A TTOH/VEY Q @if m 4. Mm :w M m m m .m

wm.. A Ql--. \\%m Nw www onw @d BS u w 3, i--- -Ilm 1 il: -l

G. F. MILLER.

EILTER PRESS DEVICE.

APPLICATION FILED APR. I4. 19|9.

Patented Feb. 10,1920.

/N VE/V TUR www,...

a Uro/mfr encima e. menne, ornew YORK, N'. Y.

e -FILTER-rams Deuren.

. TQ all ywhom zi-may concern:

`,Be ,it known that l, GEORGE F. 'MHJLER a citizen ofY they YUnited States, ,resi-dln' in the city of New York, county ofNew orlr,

' borough of Manhattan, and State of New York, have inventedcertain new andv useful wherebyn filtered material may be readily removed from the filter press frames.

' Another object of Ymy device -is mea-ns whereby filtered material may be removed from the press frames while the lattery is still in abutment with aufilter press plate.

Another object of my invention is al 'device whereby the trouble and danger incident to properly alining'y the holes of afilter cloth withthose ofthe feed andw-ashcom duits are overcome.

Vnotl er object of my vinvention is a device in which the assembling of 'the'plates and frames of a filter press is greatly facilitated. V

Another object of'iny device 'is means whereby theI removal vof filtered material from the press may be accomplishedin a minimumrof time with a minimum of labor. These and other objects of my invention will be evident upon a consideration of my drawings,A specification and claims.

The ordinary lter press comprises a series of alternate lilterpres's plates and frames separatedV by filter cloth and heldin close abutment with eachother.

TheV material to be filtered is forced through a main feed conduit andA ar seriesof frame feed-conduits into the 'space' formed vby theframe and its two abutting plates,

the filtered material remaining Within this space andthe filtrate 'passingoutwardly Lhrough the filter cloth. The' thus filtered materialis then washed by Aforcing water by means ofamjain'wash Conduit and a 'by any suitable means.

Specification of Letters Patent. y Patnted'Feb 10,1920, penetrant mea. Atm 14, 1919. ,senin No. esatta.y i

narran sra-rte PATENT ENCE; f ,l

`series ofY plate wash conduits through the y filter cloth, inwardly through the Vfiltered material and then outwardly. of the'p'ress lt isevident'tha't as the last portion 'of 'material to befiltered, or the wash water, passes lthrough the filtered material, it leaves the latter thoroughly saturated with liquid which must be removed by a later drying process. This requires additional labor for the handling ofthe large quantity of containedv liquid,

renders the handling thereof extremely difficult and causes a very considerable 'waste o'f'fuel 11i-'the drying process.

"The vdevice of 4my invention overcomes theseJ diiiiculties to a very large extent, as it f allows the' filtered material to becompressed within the frame without disturbance of the assembled frames and plates, thus causing a very considerable saving in labor, fuel and time expended in handling' and' drying.

After thematerial is ilteredin the ordinary press, the abutting means :upon A"the frames and'plates is released andthe filtered material removedV from the frames. rlhis is accomplished bys'eparating a `frame from itsv abutting'platesand manually forcing the filtered `material into a receptacle and then removingthe iilterjcloth fromaround the frame. `This necessitates'the 'handling4 of each :frame separately.V as otherwise thev filtered'material and the filter cloth can not be removed.

The device of my invention overcomes these difficulties'. In the use of my device, a plate is held in abutment with its two acent frames 'and by the'revo'luti'on of a member both frames are immediately freedy from their ltered contents and their filter cloths. This 4causes a A'very considerable saving in labor and in time consumed in emptying the frames. 'y f f In the ordinary filter press, the filter cloth extends complet-ely across the-faces of adjacent framesl andl plates. the cloth Vhave 4a series of holes correspond-V ing` exactly with the feed and wash conduits, and that these cloth holes bein absolute alinement with the feed and wash conduits, in order that there Vmay be no interference with the flow of liquid. This necessitates This requires that the greatest care upon the part of the operator and is a constant source of trouble.

The device of my invention overcomes this difiiculty as the cloth does not extend Vacrosszthe adjacent faces of the frames and plates and does not have any holes whatever in it, and hence no care of this character must be exercised and there is no danger ofV interrupting the proper flow of the liquid. L

In addition, it is to be noted that the old form vrof press requires that every frame be means of a filter press.

In the particular form of my device, shown in the accompanying drawings, similar parts are designated by similar nu# 1ne1'als:'

Figure 1 is a fragmentary diagrammatic yside elevation of an assembled filter press with parts omitted.

Fig. 2 is a section through the line 2 2 of Fig. 1.

Fig. 3 is a section through the line 3--3 c of Fig. 2 with the plate of my device in a Y non-expanded position.

Fig. 4 is a section through theline 4 4 of Fig. 2.v

Fig. 5 is a side plan view of an ordinary wash filter plate.

Fig. 6 is a `vertical section with the plate of my deviceinan expanded position.

Fig. 7 is a side plan view of a filter press frame suitable for use with my device.

Fig. 8 is a section through the line 8-8 of Fig. 7.

Fig. 9 is a top plan view showing the means for carrying the lter cloth within a frame.

Fig. 10 is a section through the line 10-10 of Fig. 6.

Fig. 11 is a vertical mid-section of a single expansion plate adjacent to the head ofthe press.

Fig. 12 is a ysection through the line 12-12 of Fig. 11.

The particular form of the device of my invention, shown in the accompanying drawings comprises a filter press plate composed of the side pieces 10 and 11, the top piece 12 and the bottom piece 13 held together by the rods 14, 14. The top 12 has a recess' 15 and the bottom 13 has a recess 16. Within the frame ofthe filter press plate is a move able field Vcomprising a series of field elements 17, 17 17 abuttable upon the field ele? ments 18, 18, 18, the outer faces of the field elements when thus abutted having a series the recess 16. The members 17 and 18 also have shoulders 24, 24. The member'll has the upperV recess 25 and the lower recess-26,

v and the member 18 has the upper recesss 27 and the lower recess 28. ietween the field members 17 and 18 is a floatable expansion member comprised of the two side plates 29 and 30 pivotally connected to the revoluble arms 31, 31, 31 by meansofthe dowel .pins 32, 32,32. The arms31, 31,131 are'fixedly lattached to the bars 33,v 33, 33 revoluble Y.

within the side members 10 and 11, the lower bar 33 extending beyond the side member 11 in order that it may be revolved by exterior means. VThe plates 29 and 30 contain the recesses 34, 34, 34 of such asize, shape and position that the'ar'ms 31, 31, 31 will fit therein whenthe plates 29 and 30 are in abutment.

ri`l1is portion of the device has the conduit 72 and the faucet 73 for the escape of the liquid.

The operation of vice is as follows:

l Fig. 3 shows the device in its non-expansible position and Fig. 6 shows itin expansible position. When the lowerbar 33 is thisy portion vof the yderevolved, the other arms 33, 33 are simi-kV larly revolved movingvthe plates 29, 29, 29

the plate 30 into the-recess 28. As the plates 29 and`30 move outwardly they move the field members 17, 17, 17 away from the field members 18, 18, 18,`thus expanding'the n filter plate field. A reverse movement of Y the bar 33 will return the plates 29 and 30 and the field members 17 and 18 into their original unexpanded position.

As the end plate, or liner plate, of an assembled filter press has only one of its sides l presented to the filtering material, itis necessary that only this one side be expansible from within its Supporting frame, and I accomplish this as shown in Figs. 11 and 12. The frame comprises the side members 40 and 41, the topV member 42 and the bottom member 43 held together by any suitable means. Within the thus formed frameare theV threemovable fi'eldinembers 44, 44, 44

having the corrugations 45, 45, 45 upon the one face thereof. Annular cam members .46, 46 are maintained revolubly within the side members 41 and 42 by the'annular extended members 47,. 47, one end of which extends beyond the side member 40, in order that the extended members 47, 47 may be revolved by exterior means. Dovetailed withinl the back `ofeaeheld member 44fare two members 48, 48l having an `opening throughwhich the cam member 46 passes andrwith which cam member the lopening conforms.

In order to eXpandthe lieldmembers '44, 44, 44, they lower bar 47 is revolve'd-thuspre'- volvin-g the; cam member 4.6 and forcing the lower portions ofthe vfield `members 44,y 44,

44 outwardly.k The lsame.operation by the conduit 68 leading -into Uvthe, conduit 69v within theiield members 65, 65, 65, the conduit 69 being connected tothe corrugations of the field members 65,65,- bythe conduits 70, 70, 70; The side member 60 -has the feed vconduit 71 to connect with the feed conduit of an adjoining fra-me. Thecon duit 72 andI the faucet 73 allow the removal ofthe liquid. y

Fig. 7 shows an ordi-nary, filter vpress frame composed ofthe sides 90 and 91, the

top 92 andthe bottom 93, connected by the stay bolts 94, 94. The side 90 has the main feed conduit 7 1'connectedv to the conduit 95 and the lside 91 hasvthe main wash con,- duit 67. f Y,

The methodofrcarryingthe filter cloth Within the frame is as follows :--v

Slight vertical recessesk 96, 96 areA cut upon the innerportionof thefvfacejs ofthe sides 9 0, r91,. Deeper recesses 97 97 97, 97 are cut' at the extremities of the recesses 96, 96upon one face of the *sides 90 and91. Bars 98, 98 arecapablefof being tted-f into the recesses97, 97; A'filter'c-loth 10() is hung over the upper bar' 98 and extends downwardly from both sides thereof,l ythe sides ofthecloth fitting snugly into the recesses, 96, .96 to form atight joint "with `an abutting filter press member when assembled. 1

ft is 'evident therefore that when pressure is broughtagainst one side V,of the filter cloth, the cloth, the'bars98, 98 and thecontents yof thev cloth will be forcedl outwardly from the framec v f Fig'. 1 illustrates one method ofbuilding up a filter press with the expansion platesl V82,vr 82, A82. In' the arrangement sh-ownA is a single expansion-end plate, Fis airordig-4v nary feed filter frame, P is ordinary wash plate, X isr a doubleexpan'sion plate. j Each expansion plate AXie capfableof being attached to thek adjacent v frames F F yby means of the pivoted double hook catch 83', capable of' being,k attached tor the; extended'. .pins 84, 84, 84 of the frames, and the single'expan'- sion member A can vbe similarly attached to the adjacent frame F: by means of the pivo'td catch 85. j The operation of the assembled device is as follows: "W Y The finateri'al to bek filteredis forced through the mainA feed conduite 1,- Vpassing through the frame feed conduits 95,195" into the filter cloth bag-100 kformed within vthe frame. Theliquidpasses through the cloth and escapes through the con'du `its72,i72 and the faucets 73, 73', the'filteredy material remaining within the cloth covered space of the frame. ,"i/VhenV allV of the material is forced therethrough, Ithiellower lextended bar 33 Vis revolved thus forcing the expansion plates 29 Vand 30 v'andi-the field plates 17,17, 17 and 18, 18, 18,'ou'twardly compressing the filtered material andv forcing fa large proportion of the liquid therefrom. The ei;- pansion plates 29' and30 and the field plates 17, 17, 17 and 18, 18, 18 are then returned to their unexpanded position and 'wash washing operati'oiri's completed they expan-V sion pla-tes 29 and 30'and the field plates' 17, 17, 17 and 18, 1 8, 18 aire again eXjoanded ex? tracting a large proportion of vwater from the filteredl Ymateria-l 'andy then 'returned A to their original unexpalided position. j

` The filtered material is now readytolbc removed` from the press which is accom- `70, 70 and t-he vmaterial washed. 1When the` i plished as follows, as` shown in the right hand portion offFig; 1:-'-

''The regular' follower head 'of fthe'pre'ssf iii-e' y not shown, is `withdrenvn thusremoving the pressure .upon the plates and frames 'and allowing them to be moved upon the supportj' I ing bars 81, 81. yAll of the ordinary wash plates l?V P are removed thus leaving a series of expansivey plates X X'. 'eachhaving abutting framesF F towhiich they areattached by. means of the members 83,283. The-'ex'- tended bar' 33 vof an eitp'ansion J plate is the-n' revolved forcingthe field plates 17, 17 ,1 17 and 18,118, 18 outwardly,fthis movement forcing the-filter cloth and the cakes lof 'ma- K r o te-rial out' ofthe two vframes into a frecep'- tacle. By these means the entire an'i'ountof material is removed from therfraine as it is containedwithin`V the clot-h bag', whereas" in the'.` .present employed methods the material musty be removedby hand leaving considerable,amount'ofmaterial adhering'to the 1 130 frame unless great care'is exercised. iVVhen V a frame, two movable field plates within the Y bars 47, 47..

While I have illustrated the fields as composed of a series of field plates 17 ,'17, 17 and 18, 18, 18, I do not limit myself to this particular construction, as it is evident that each of these series maybe substituted by one field plate without otherwise'changing p theconstruction of my device as shown and.

described.'

' My device compression of excess liquid from the filtered material cakes, for the rapid and thorough discharge of the filter cakes from the frames and for an effective means of charging the frames with filter `cloth without danger of interrupting the flow of the incoming liquids. 4

I do not limit myself to the particular size, shape, number or arrangement of parts as shown and described, all of which may be varied without going beyondv the scope of my invention as shown, describedfand claimed. .v

1. In afilter press device, in combination,

frameand means connectingv the field plates whereby they may be moved-inwardly and outwardly with respect to each other.

2. In a filter ypress device, in combination, a filter plate frame, a movable field plate within the frame, a revoluble member abutting upon the field plate and means for revolving the revoluble member moving the field plate outwardly of the frame. f 3. In a filter press device, in combination, a filter plate frame, a Vmovable field plate comprised of Va series of fields within the frame, revoluble members abutting upon the Y series of fields and means for revolving the revoluble members moving the .fields outwardly of the frame.

4. In a filter press device, in combination,

a filter plate frame, two movable field plates within the frame, revoluble .members abutting upon the field plates and means for revolving the revoluble members moving the fieldsoutwardly from eachother. 'Y

5'. In a filter press device, in combination,

a filter plate frame, two series of field plates within the frame and means for moving the thus presents a means for the 7. In a filter press device, in combination, a filter press frame, two series of movable field plates within the frame, revoluble means abutting upon the two series of field plates and means for revolving the revoluble members moving the Atwo series of field plates outwardly from each other.

8. Ina filter press device, incombination, a filter plate fra1ne,.two field plates within the frame, an expansible member between the two field plates,means for expanding the expansible member forcing the -field plates outwardly from eachother and means for moving the expanded members inwardly drawing the field plates inwardly toward each other. j Y

9. In a filter' press device, in combination, a filter plate frame, two series of field plates within the frame, an expansible member between the two series of field plates and.

' from each other and kforwithdrawing the expanded members drawing the two series of field plates inwardlytowardv each other.

11. In a filter press device,fin combination, a filter plate frame, two field plates within the frame, a member abutting upon the inner face of each field plate, means for moving the abutting members from each other forcing the field plates, outwardly Vfrom each other. and for -withdrawing the expanded abutting members drawing the field plates toward each other.

12. In anfilter press device, in combination, a filter plateV frame, two series'of field plates within' the frame, a member abutting K upon the inner face of each series of field plates and means for moving the abutting members from each other forcing the two series of field plates outwardly'from each other. y

13. In a. filter press device, in combination, a filter plate frame, two series of field plates within the frame, a member abutting upon the inner face of each series of field plates, means for movingfthe abutting membersl from each other forcing ythe two series of field plates outwardlyfrom each other and means for' moving the expanded abutting members inwardly drawing the field plates toward each other.

14. In a filter press device, in combination, a filter plate frame, two field plates within the frame, a slidable member abutting upon the inner facev of each field plate,

means for moving the abutting members wardly from each other and means for drawing the expanded abutting members inwardly toward each other. Y

15; In a filter press device, in combination, a lilter plate frame, two series of field plates within the frame, a slidable member zbutting upon the inner face of each series of field plates, means for moving the'abutting members from each other forcing the 10 field plates outwardly from each other,y

means for drawing the expanded abutting members inwardly toward each other and means whereby the inward movement of the expanded members will draw the elclA plates inwardly toward each other. y

Signed at New York city in the countv 10th day of April? 1919.

GEORGE F.7MILLER.

Vof New York and State of New York this 

